Heel-seat-trimming machine for use in the manufacture of boots and shoes.



M. T. DENNE. HEEL SEAT TRIIVIMING MACHINE FORU SE IN THE MANUFACTURE OFBOOTS AND SHOES.

AP PLICATION FILED AUG.22. I9lO.

PatontcdSept. T, 191;).

3 SHEETSSHEE1I.

I M. T. DENNE. HEEL SEAT TRIMMING MACHINE FOR USE IN'THE- MANUFACTURE OFBOOTS AND SHOES.

I APPLICATION HLED 5116,22. 1919 1,152,799

Patented'Sepfi. 7,1915.

To all whom it may concern 1 UNITED srarns PATENT oFFIcE.

MARK THOMAS DENNE, or RUSHDEN, ENGLAND.

HEEL-SE.A'JI lRIMMING MACI-IIN'IE- FOR USE IN THE MANUFACTURE OF BOOTSAND SHOES. I

Be it known that I, MARK Trio As DENNE, a subject of the King of GreatBritain and Ireland, residing at Rushden, Northamptonshire, England,have invented new and useful Improvements in Heel-Seat- TrimmingMachines for Use in the Manufacture of Boots and Shoes, of which thefollowing. is a specification.

This -invention has reference to improvements in heel seattrimming'machines for use in the manufacture of boots and shoes wherebythe edge of the sole forming the heel seat may be trimmed at any desiredpredetermined distance from the upper or the.

. crease of a lasted boot or shoe, and it'consists essentially in aparticular construction and arrangement of the trimming mechanism andfeed mechanism and a particular arrangement of the presser foot. I

In the accompanying drawing Flgure 1 is A a side elevational view partlyin section,

Fig. 2 a plan view, Fig. 3 a front elevation of aheel seat trimmingmachine constructed in accordance with myinvention, andFig.

4: is a detail view hereinafter referred to.

In said drawings the numeral 1 indicates an arcuate trimming knife and 2a similarly shaped feed awl or feed foot which is located at the side ofthe knife and preferably slightly to the rear thereof and is adapted toenter or engage the projecting part of the sole to be trimmed. l

The knife and feeder'are supported in a clamp or cramp 3 of a rockingbar or carrier 4, which clamp has V grooves in which the correspondinglyshaped outer edges of said knife and feeder fit. The bar 4; is supported on a spindle 5 on which it is capable of rocking and also slidingaxially and its rear end is formed with a quasi claw 6 having acylindrical recess 7 in which a cylin drical block 8 slidably androtatably fits.

An eccentric or crank pin 9, formed or provided on a shaft 10 for whichI provide suitable bearingsat the rear of the machine head and on whicha triangular cam 9 and the usual driving and loose pulleys 11 aremounted, enters an aperture in the block 8 so that'the rotation of theshaft 10 will rock the lever 4 and consequently impart to the knife 1and feeder 2 verticalrock-ing move- 'ments. each end with upwardlyextending arms 13,

one of which is bifurcated and engages the I Specification of LettersPatent.

A sleeve or equivalent 12 formed at.

' Patented Sept. '7, 1915.

Application fi1ed-August22, 1910. Serial No. 578,397.

triangular cam 9f on the shaft 1Q and the other of which engages a slotin the boss of the lever 4, is mounted .on. a rock-shaft 14 locatedbelow the lever 4:, the .position of the crank pin 9 and triangular cam9? relatively to each other being such that at each rotation of theshaft 10 the knife and feeder will have imparted to them by the combinedactionof the crank pin 9 and the triangular cam 9 a four motion feedmovement, the

vertical rocking movement being brought about byvthe action of thecrankpin 9 and the horizontal movements by the triangular cam 9 theknifeduring its downward movement severing or cutting through the soleedge. Fig. 4 is a front end view of the said,

shaft 10, crank pin '9 and cam 9".

The work issupported with its sole or heel seat substantially horizontalby a table 15 at the front of the head and also by a roller hereinafterreferred to. A gage 16,

whose front end is shaped to approximately conform to the shape of theheel portion bf the lasted 'boot, the sole or heel seat of which isto betrimmed, is adjustably car.-

ried by an approximately inverted U-shaped saddle piece 17 which issupported onthe spindle 5. The bottom edge or surface of the gage 16 isintended to engage with the upper surface of the projecting sole edgeand act as a presser foot, .the saddle piece 17 being pressedforwardlyso that the presser foot'exerts the necessary pressure on thesole edge-by a spring 18- arranged within a suitable housing and actingon a plunger 19 pivotally connected to the saddle 17. The

said presser foot presses the sole edge into firm contact with a roller20 the periphery of which projects up into an aperture in the table 15andmay with advantage be formed with teeth or serrations to insure abetter The saddle plece 17 is provided with a handle 17 by pressing onwhich the work man may raise the presserfoc it when about to insert orremove-work. l

V The parts are so arranged that the acting surface of the presser footis substantially in horizontal alinement with the axis of the spindle 5on which it turns and accordingly thepressure which the .workman exertsin. pressing the lastedboot against the gage or presser foot 16 has notendency to raise the said presser-foot.

At the front of the machine head and immay from time totime be moved onits support so asto ,ofler a fresh shearingedge accordingly as weartakes place.

The roller is preferably supported on the rock-shaft 14 and the frontendof said shaft may have a, ratchet ring 22 mounted on' 5 it --the teethof which engage with corresponding teeth on the roller 20. The ratchetring 22. is made to rotate or rock with the shaft 14: beingcoupledthereto by a cotter 23'but is capable ofendwi'se movement thereon andispressed againstthe roller QO by a spring the-arrangement being such thatwhen the rock-shaft is moved in one direc tion bygthe tri angular.cam 9the ratchet ring 22 willrotate the .roller20 with it and thus feed thework, and on the return movement of the shaft lathe'ratchet ring-2 2will 7 glide overthe-teeth. of the roller 20.

If desired, the shear blade 21' may be' fixed -'to the roller 20eso thatat-each feed movement of said rollervthesheariwill be made -to presentafresh cutting edge.-

The gage-16 may at its *lower edges be L the: me

madeto. enter; the crease to serve as a crease guide, and-as' the workis-fed by the-roller.

- ingedge of the heel seat of lasted boots or shoes, the combination ,ofa 'work table, a trimming knife, a stationary shear-blade lo- 20 andthefeeder the operator will move the work so astbfproperly present it;to;the cutjThe numeral '24 indicates, the head of. the I machine ofsuitable construction to carry hanism, and 25 is the usual standardwhichsupports the-said head.

l fj WhatxI plaim as my =inventlon and desire shoes,

.r a 'feeder-f areimounted, ,a shaft on' which the said lever is mountedso that it cangrock and byl'fLetters .Patent is I e combinations-of awork support, a curved trimming .'knife,. a curved feeder, a lever onwhich the said'knife and slide thereon, and means comprising a rotating'crank pin and a triangular cam for imparting a four-motionmovement to the said rocking lever,

2. In a machine for. the project-*- ing edge'lof the heel seat" oflasted boots and shoes, the'combination of a work table,a' feed-r'oller'let, into' an aperture in the fsaidl.

table, means for intermittently rotating the said. roller, a curvedtrimming, knife," acurved feeder, means for imparting asimultaneous'four-motlon movement to the, said a' machine':fj r trimmingthe project ofthe heel seat of'l asted boots and knife and feeder, andacombined presserfoot 'an'd gpge sup orted on a horizontal Spinal. L610axis 0 which is in approximately fiheisa me horizontal lane asthe'acting face of the said presseroot.

3. In a machine for trimming the projecthorizontal spindle-to carry saidknife and feedfoot at its front end and having a claw with a cylindricalrecess at its other 'end, a cylindrical block in said recess, means toimpart simultaneous vertical and horizontalmovements to said block andmeans "to .i1 I 1-- part axial movements to the rocking lever,

4. In a machine for trimming the projecting edge of the heel seat oflasted boots or .shoes, vthe combination offa work-table, a workfeedwheel, means for intermittently. rotating said-workfeed wheel,atrimming knife, a spring pressed presser foot to engage the upper faceof the sole near its edge r and also to limit'the movement of the worktoward the knife, a saddle to carry said presser foot and a spindlewhose axis is in substantiallythe vplane of the table to carry,aidsa'ddle. v v

5. In a machine for trimming the projects cated in a slot in-the saidtable'and adapted "to cooperate with, the said knife, and aspring-pressed presser foot pivotally mount, 1 t

ed on a spindlethe axis of ,which approximately vthe same, horizontalplane "as the, acting face of the said ipresser foot. y 6. In a machinefortrimining the projecting edge of the heel-seat of lasted boots orshoes, the. combination ,ofa work-table, an intermittently f rotatablework feed wheel, an arcuate trimming knife, a stationaryshear. bladeadjustably .mounted below the surface of the work-table and adapted tocooperate with'the said knife, a rocking lever .to carry the saidtrimming knife, a combined presserfoot and-work gage, ,and means'toimpart four-motionmovement to said rocking lever.v

In testimony whereof I have signedniy name to this specification in thepresence of 'two subscribing witnesses.

v MARK THOMAS DENNE. I Witnesses: j J. Fussnrm,

'L; H. TAYLOR.

